1899.] 1G9 



A DESCRIPTIVE LIST OF THE BEITISH CORDYLURIDM. 

 BY R. H. MEADE, F.R.C.S. 



My endeavour in this list will be to describe as concisely and 

 clearly as possible the characters of some of the higher Acalypterate 

 Muscidce, so that a student may determine the names of the species 

 which he may find with tolerable accuracy. I shall not attempt to 

 divide this family into the numerous groups, sub-families, and genera 

 which have recently been established by Becker in his paper on the 

 Scatomyzidce* as that would defeat my object by making the subject 

 complicated and difficult ; but I shall pursue with a few modifications 

 the arrangement adopted by Schiner in the " Jritwwrt austriaca,'" Sbwd. 

 followed by Van der Wulp and Meijere in their lately published (1898) 

 list of the Diptera of the Netherlands. 



The Co7 dyluridcB, Mcq., or Scatomyzidce, Fin., have small but well 

 marked calyptra or scales, though they are included among the 

 Acalypterati (Haliday). They differ from the Anf homy idee, to which 

 they are related, and which they follow in the scale of Diptera, by 

 having the eyes (which are alwuys bare and widely separated in both 

 sexes) shorter and rounder, the oral setsef mostly weaker, the body more 

 elongated and narrower, aud the wings shorter than in that family. 



This group may be divided into two sub-families, viz., Cordylurince 

 and Scatophayinee, and sub-divided into a number of genera (some 

 very anomalous), which may be thus tabulated : — 



1 (2) Eyes long, abdomen very short 1. Leptopa, Ztt. 



2 (1) Eyes short and sub-round, abdomen prolonged. 



3 (21) Abdomen long, narrow, and subcylindrlcal in the male, with the apex in- 



curved ... {^Cordylurince). 



4 (19) Proboscis mostly short, with blunt lobes. 



5 (8) Palpi with ends dilated (club or ladle shaped). 



6 (7) Head with prominent eyes and nude forehead 6. Htdromtza, Fin. 



7 (6) Eyes unprojecting, frontalia bordered with bristles for the whole length... 



7. Tbichopalpus, Rnd. 



8 (5) Palpi filiform or subfiliform. 



9 (10) Male abdomen with long lateral tufts of hair 5. Pogonota, Ztt. 



10 (9) Abdomen untufted. 



11 (16) Arista plumose. 



12 (13) Fore femora armed with long spines 3. NoKELLlA, Dsv. 



13 (12) Femora without long spines. 



14 (15) Antennse short 2. Coedtlura, Fin. 



15 (14) Antennae very long ...4. Cnemopogon, Rnd. 



* Berliner Ent. Zeit., Bd. xxxix (1S94). 



t I use the term ond setse instead of that of vihrhsc, because the latter name hais been given 

 by Zetterstcdt to the facial setai. 



